[FA-misc] Mass transit overhaul, needs testing and review

FictionArchive.Service.ReportingService/GraphQL/Mutation.cs

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+using HotChocolate;
+using HotChocolate.Authorization;
+
+namespace FictionArchive.Service.ReportingService.GraphQL;
+
+public class Mutation
+{
+    /// <summary>
+    /// Placeholder mutation for GraphQL schema requirements.
+    /// The ReportingService is primarily read-only, consuming events from other services.
+    /// </summary>
+    [Authorize(Roles = ["admin"])]
+    [GraphQLDescription("Placeholder mutation. ReportingService is primarily read-only.")]
+    public bool Ping() => true;
+}

FictionArchive.Service.ReportingService/GraphQL/Query.cs

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+using System.Text.Json;
+using FictionArchive.Service.ReportingService.Models.Database;
+using FictionArchive.Service.ReportingService.Models.DTOs;
+using FictionArchive.Service.ReportingService.Services;
+using HotChocolate;
+using HotChocolate.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace FictionArchive.Service.ReportingService.GraphQL;
+
+public class Query
+{
+    [UseProjection]
+    [UseFiltering]
+    [UseSorting]
+    [GraphQLName("reportingJobs")]
+    public IQueryable<Job> GetReportingJobs(ReportingServiceDbContext dbContext)
+        => dbContext.Jobs.Include(j => j.History);
+
+    [GraphQLName("reportingJob")]
+    public async Task<JobDto?> GetReportingJob(Guid id, ReportingServiceDbContext dbContext)
+    {
+        var job = await dbContext.Jobs
+            .Include(j => j.History.OrderBy(h => h.Timestamp))
+            .FirstOrDefaultAsync(j => j.Id == id);
+
+        if (job == null) return null;
+
+        return new JobDto
+        {
+            Id = job.Id,
+            JobType = job.JobType,
+            Status = job.Status,
+            CurrentStep = job.CurrentStep,
+            ErrorMessage = job.ErrorMessage,
+            Metadata = job.Metadata != null
+                ? JsonSerializer.Deserialize<Dictionary<string, object>>(job.Metadata.RootElement.GetRawText())
+                : null,
+            History = job.History.Select(h => new JobHistoryEntryDto
+            {
+                FromState = h.FromState,
+                ToState = h.ToState,
+                Message = h.Message,
+                Error = h.Error,
+                Timestamp = h.Timestamp
+            }).ToList(),
+            CreatedTime = job.CreatedTime,
+            UpdatedTime = job.UpdatedTime,
+            CompletedTime = job.CompletedTime
+        };
+    }
+}